Engine



F. J. DOYLE.

.ENGINE APPLICATION FILED OCT I5, I9I7.

PJGDQQSGDI' 13, 1921.

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ENGINE.

,APPLICATION FILED OCT 15l 1917. 1,390,281 PatentedSept. 13, 1921.

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I 0 1 i 1g '\4}\ l F. J. DGYLE.

ENGINE. APPLlCATlON FILED OCT 15. 1917.

1,390,281. Pmmedsept. 13,1921.

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` F. 1. DOYLE.

ENGINE.

APPLICATION FILED ocT 15,1917.

Patented Sept. 13, 1921.

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UNITED STATES PATENT OFFICE'. l

FRANCIS J'. DOYLE, OFFCHICAGG, ILLINOIS, ASSIGNOR T0 N. V. HAYWA'RJ).`

ENGINE.

Specificationof Letters Patent. y Patented Sept, 13,1921.

Application filed October 15,1917. Serial No. 196,590.

To cZZVwLom t may concern:

Be it known that I, FRANCIS J. DOYLE, a citizen oit' the United States, residing in the city of Chicago, countyk of Cook, and State oi' Illinois, have invented certain new and useful Improvements in Engines, of which Y the following is a. specification.`

der each have an independent bodily move-` ment in opposite directions on any given stroke and are connected to operate synchronously; to provide a construction in which the explosion` or expansion of the gases move both the piston and cylinder so as to successively allow the intake of the charge, compression of the charge, explosion ofthe charge and expansion and also exhaustion of the charge; to provide a construction in which the exhaust is in the case of an explosive mixture drawn out of the cylinder by the aid of a vacuum created by a pump so as to vinsure arapid andcomplete exhaustion; to provide a construction in which during the first part of the stroke the explosion or expansion takes place then the exhaust gases are removed, a fresh charge then taken in and compressed; to provide a construction in which there is av positive action at each move of the piston and at the end Vof each piston stroke; to provide a construction in which no valve mechanisms are used except in the action between the pistons and ports themselves; to provide a construction which practically eliminates vibration of the engine; to provide a construction in which the gas is so measured as to insure at all times the proper mixture and in which thenecessity of a carbureter ris eliminated; to provide a construction in which the spark plugs are so arranged as to prevent premature explosions, the circuit through the plugs being closed by the cylinder inseli'; to provide a construction in which the engine may be so constructed as to bodily rotate if desired and yto provide a construction in which a single piston and cylinder have the etilciency of a normal four cylinder construction; to provide means :tor water coohng the removed.

cylinders `after explosion if so desiredand E in general to provide a simple and improved construction of the` character referred to.

In the drawings:

Figure 1 is a top plan view of my engine with parts broken away in sections to show the details of construction and reduce the size of the drawings.y n l Fig. 2 is a vertical sectional view taken on vindirect lines 2 2 of Fig. 1 and looking in the direction of the arrows, parts being broken away. i A

Fig. 3 is a vertical sectional view through one of the cylinders.

Fig. 4 is aside elevation with ,the gearing Fig. 5 is anenlarged transverse sectional view through the cylinder blocks, on an enlarged scale. f

Fig. 6 is an enlarged' sectional view of one of the gas compression pumps.y

`Referring to the drawings, 1 designates the base support for the engine, on which are mounted standards 2 and 3. Through these standards is bolted or otherwisesuitably secured the cylinder block castings designated as a whole 4; In this cylinder block casting is formed a pair of cylindrical castings 5 and 6 respectively. In each of these casingsis mounted a reciprocating cylinder member 7 having a sidewall 8 and closed endsy 9 and 10. Each of thesecylinders slide in its stationary casing. Preferably each movable cylinder is provided with a plurality of annular packing ring 10, 10. In each cylinder is mounted a reciprocating piston 11, having positively extending piston rods 12 and 13. These piston rods 12and 13 may be and preferably are formed integrally as one continuous rod, although they might be formed if desired in two pieces. Each piston rod extends through suitable bearings 14E and 15 in the heads 9 and 10 of the movable cylinders and is connectedby a link 16 to the` crankshafts `17 and 18.

The movable cylinders are likewise connected at either end to the` respective crankshafts by means of a. pair of connecting links or rods 1,9 and 20, it being understood that there is a pair of these at either end of each cylinder. These links are pivoted as shown at21 tothe heads of the movable cylinders and at 22 to the crankshaft. As will be seen more clearly in Fig. 1, the connections between the movable cylinders and the crankshafts are such that, as the piston moves in one direction, the movable cylinderl moves in the opposite direction; Y

Describing now the port arrangements for the cylinders, each stationary cylinderV is provided with a single inlet 23, which is of sufficient size to permit of a proper charge entering the cylinder, I t adapted to coperate With suitable inlet ports 24 in the upper side kof the movable cylinder. The arrangement is such'that these ports 24 yregister with the port 23 in the sta tionary casing at the proper time. .The mcvable ,cylinder is also. providedivith a plurality of exhaust ports 25, 25, which coperate with exhaust ports 26 in the stationary cylinder. These exhaust vports 26 v,are connected to a common exhaust chamber 27 by means of a plurality of exhaust ducts 28, which are formed on the outer side of the stationary casing and all lead to said common exhaust chamber 27. To the exhaust chamber 27 is connected a vacuum pump 429,`\vhich pump is actuated through a counter shaft 30, carrying a pinion 31 and driven through ,one of the constantly rotating trains of gears here# inafter more fully described. The exhaust pump serves to facilitate the verf,7 rapid exhaustion of the gases Where an explosive mixture is used. Where'a motor fuel such as steam is used, this 'exhaust pump might be dispensed with. f

As a feature of my invention, I provide means for introducing the gaseous mixture into the cylinder. This .is accomplished by a pump designated asa Whole 32. This pump comprises a pump cylinder .33, in which is mounted a pairof pistons 34 and 35. The piston .34 is connected by a piston rod 36 to a bracket y37 secured to the links 19 and 20. The piston 35 yis connected to an arm 38 by a piston rod 39, the latter being pivoted'at .40 to the piston andraty 41 to the arm. The

arm 38 is secured to the link 16 Describing now the manner in Which the gas and air enter the pump cylinder, I provide a pair of supply pumps 42 connected to a main inlet pipe 44 by `pipes V43. The

. cylinder 32 is provided vwith inlet ports45y vce and 46, which are controlled by ports 47 and 48, .carried by shell like fins 49 and 50, secured to the inner ends of the respective pis! tons. Inasmuch as these fins pass each other in the inward movement of the pistons, they areropposite each other'or lie in different planes or dierent segments of the circle and'each piston-is recessed as shown at 51 to receive the 1in of the opposite piston. Air is admitted to the cylinders through ports 52, which are controlledby the pistonsjthemselves. The arrangement .is such as to form the proper gaseous mixture forrinduction into thel cylinder, thus dispensing With the necessity of a carbureter. The gaseous mix'- ture is ignited by spark plugs 53 and as a Each inlet port is.

carried by the movable Wall..

"Crankshafts are mounted in suitable bearings 55 carried by standards 56, supported on the bed plate.V Between the .crai'ikshafts are mounted supporting bars 57, 58 and 59, which primarily serve as bearings for gears. Describing lirst the high gears, on each crankshaft are secured gears 60, which mesh with idle gears 61 which inl turn mesh with a central gearl 62. VThe idle gears 61 are mounted on stub shafts 63 carried by the bars 57 and the frame' ofY the engine respectively.V t

Describing the gears for driving lin re' verse, on the crankshafts are mounted gears 68, which mesh with idle gears 69, which in turn mesh With a second set of idle gears which drive the central gear 71. The gears 69,70 and 71 are mounted onsuitable stub shaftsl carried bythe bar 59. The central'gears are loose on the driveshafts 72 and 73.k VBetween each set of high and lo'W gears on these shafts is mounted friction disks 74 and 75, which are actuated by suitable clutch mechanism, which may be of any Well known construction; The reverse gears are controlled by clutch disks 78 actuated by clutch lever 79, The friction disks are ars ranged Ain a Well known manner so thatthe loiv gears will not be in driving relation With the drive shafts at the same time the high vs and vice versa.

In the operation of the engine, it` Will be nrs-ed that the piston has driving action in both `directions of movement, and also that not .only the pistonsy but the cylinders each have 7' l `Jcndent bodily movements andare y c in timed relation. i A ,I ciaimas my invention:

1. In Van engine, the combination with a pair of stationary cylinders, a pair of movable cylinders reciprocating therein, a'piston for each movable cylinder provided With piston rods projecting through both ends of the` cylinder and secured to a corresponding crankshaft and actuating mechanismivhereby each piston and its corresponding cylinder move simultaneou'slyl in opposite directions.

2. In an engine, the'combination `with a lio stationary cylinder, a movable cylinder reoperably connected at both ends with crank ously in opposite directions, inlet and outlet shafts, e piston for each movable cylinder ports in the cylinder registering with inlet provided with piston rods extending through and outlet ducts, said outlet ducts communi- 10 both ends of the cylinders and'having driveating with a common exhaust chamber, and ing connections With said crank shafts, aomeans for feeding fresh fuel to the cylintuating mechanism whereby each piston and ders. 1 its corresponding cylinder move simultane- FRANCIS J. DOYLE. 

